Delphi, when providing support to the editor, compiles the whole file containing the cursor but completely skips all codegen and in fact all function bodies (i.

Delphi, when providing support to the editor, compiles the whole file containing the cursor but completely skips all codegen and in fact all function bodies (i.e. type checking, expression analysis etc.) that don't contain the cursor. The cursor is represented as a fake token, and the parser longjmps out with context when it's discovered; it resets the lexer context if it finds the cursor in the body of a function it's trying to skip. It doesn't need to compile dependencies because the public parts of units are a serialized symbol table with full definitions, rather than simple object files.